Initialise once:

 git submodule init

And make sure it's up to date:

 git submodule update

The project supports multiple boards and multiple projects.

RuuviTracker projects supports only RuuviTracker C2 board. To compile it, you must first edit the settings in the beginning of src/main-tracker.c and compile it with the following command:

 make SC_PROJECT_CONFIG=projects/rtc2_tracker.mk -j4

To build the generic "test" project for STM32 F4 Discovery, run:

 make SC_PROJECT_CONFIG=projects/f4_discovery_test.mk -j4

To build the sleep mode test project for STM32 F4 Discovery, run:

 make SC_PROJECT_CONFIG=projects/f4_discovery_power.mk -j4